Electrical discharge device



March 22, 1932. w, HENDRY 1,850,585

ELECTRICAL DI SCI-IARGE DEVICE Filed March 9. 1927 INVENTOR WILLIAM HuwmBYPJ 166,4;

ATTORNEY Patented Mar. 22, 1932 UNITED STATES PATENT QFFICE WILLIAM F.HENDRY, F OSSINING, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO MANHATTAN ELECTRICAL SUPPLY I COMPANY INC; OF JERSEY CITY, NEW MJERSEY, A CORPORATION OF NEW JERSEY ELECTRICAL mscimnen nnvicnApplication filed March 9,

0 supported independently thereof.

An object of my invention is the provision of an improved rectifierconstruction whereby a rectifier of the above type may be cheap- 7 lyand efficiently constructed.

Another object is the construction of a rectifier of relatively smalldimensions.

I accomplish these objects by so arranging the several component partsof the rectifier p that the cathode rests upon and is supported by theanode structures.

Other objects and advantages of my invention will be made clear by thefollowing detained description and accompanying drawings, taken inconnection with the appended claims forming a part hereof.

The invention is illustrated in connection with a rectifier of the typedisclosed in my copending application Serial No. 14c0,309.

In the drawings, Fig. 1 is a. sectional view of a rectifier constructedin accordance with my invention. Fig. 2 is a plan view of the electrodestructure of Fig. 1.

Reference numeral 1 indicates an envelope of glass or other transparentor translucent material, having an inwardly turned base portion 2 uponwhich is supported two anode structures 3 and at and a cathode Cathode 5is preferably made of aluminum, although, it is within the scope of myinvention to use other material. The inwardly. turned base portion 2 hasattached thereto two tubular extensions 9 upon which the electrodestructures are mounted. Electrode structures 3 and -1- consist of aconducting button having a base portion'6with a point 7 and a rod 8attached lsz senai No. 173,911.

thereto. -This button is made preferably of carbon or nickel, but otherconducting materials may be used. Rod 8 is seated within the.

bore ofextension 9'and is surrounded by a sleeve 14 of lava, porcelainor the like, which has a perforation 15 in one end and a perforation 11in the other end thereof. The sleeve 14 by virtue of the perforationssecures the button in position relative to the extension 9 of inwardlyturned base portion 2. Point 7 fits closely withinthe perforation 11 butdoes not touch the walls thereof, due to being centered in theperforation by the base portion 6 which fits tightly into perforation 15of the sleeve. I

Cathode 5 is pierced by two holes 16 and 17 through which the anodestructures 3 and 4: roject. Sleeves 14 are tapered so that they will fittightly within holes 16 and 17 Grooves 1O insleeves l4 serve toaccommodate a fiat plate 12 which extends between the two sleeves. Thisplate 12 serves as a stop for preventing the cathode from sliding downon the anode structures too far. A leading-in wire 13 is connected tocathode 5 and passed downwardly through a hole in the cathode, and ahole in the plate 12 to the outside of the envelope. This wire 13 servesto hold the cathode 5 down upon the sleeves 14. A leading-in wire 18 isattached to rod 8 of each of the conducting buttons and extends to theoutside of the envelope. 7

By constructing a rectifier in the manner disclosed herein, I obviatethe necessity for a separate cathode support. and also cause the cathodeto approach the anodes more closely, thus reducing the overalldimensions ofthe rectifier structure.

While I have shown for the purpose of illustration a specific embodimentof my invention, I do not wish to be limited thereby as it will beevident to one skilled in the art that eriationsmay be made in thematerials used and the arrangement of parts, without a de parture fromthe spirit of the invention as set forth in the following claims.

What I claim is:

1. A rectifier comprising an envelope having an'inwardly turned endportion, atubular extension attached to the end portion, a conductingbutton having a base portion and a point, supported by said extensionsaid base portion resting against the end of the extension, aninsulating sleeve closely surrounding the said point and extendingdownwardly closely embracing the said base portion and a section of thetubular extension, an electrode 7 having a perforation therein, saidsleeve projeoting within the perforation and serving as a support forthe electrode.

extending between the two sleeves and supported by the grooves, a hollowelectrode having two perforations therein, said sleeves projectingwithin the perforations and serving as a support for the electrode,leading-in wires attached to the rods of the buttons and to theelectrode and extending to the outside of the envelope through seals inthe walls thereof.

In testimony whereof, I have si ed my name to this specification, this2n day of March 1927.

WILLIAM F. HENDRY.

2. An electrical discharge devicecompris-v g ing an envelope having aninwardly'turned end portion, two tubular extensions attached to the endportion, a conductingbutton having a base portion and a point, supportedby each of said extensions, said base portions resting against the endof the extensions, an

' insulating sleeve surrounding the said point and extendingdownwardlyand closely embracing the said base portion and a section of the tubularextension, an electrode havingtwo perforations therein, said sleevesprojecting within the perforations and serving as a support for theelectrode.

3. An electrical discharge device, comprising an envelope having aninwardly turned withinthe perforations and serving as a sup-.

port for the electrode, leading-in wires attached to the rods of thebuttons and to the electrode and extending to the outside of theenvelope through seals inthe walls thereof. 4. rectifier, comprising anenvelope hav-v ing an inwardly turned end portion, two tubularextensions attachedto the end portion, a conducting button having a baseportion, a

i point projecting from one side thereof and a rod projecting from theother side thereof, supported by each of said extensions, saidbasefportion resting against the end of the extension and the said rodextending inside the said extension,'a'n outwardly tapered insulatingsleeveclosely surrounding the said polnt but not touching the same "andextending do'wn'wardlyclosely embracing the said base portion and asection of the tubular extension, a groove in each sleeve, a thin plate

